/* 公共的样式 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;

    background-image: url(../image/chess.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

.nav {
    height: 50px;

    background-color: rgb(50, 50, 50);
    color: white;

    line-height: 50px;
    padding-left: 20px;
}

.container {
    width: 100%;
    height: calc(100% - 50px);

    display: flex;
    align-items: center;
    justify-content: center;
}

button {
    width: 225px;
    height: 50px;
    font-size: 20px;
    background-image: linear-gradient(to top, #fad0c4 0%, #fad0c4 1%, #ffd1ff 100%);
    border: none;
    outline: none;
    border-radius: 10px;


    text-align: center;
    line-height: 50px;
    margin-top: 20px;
}

button:hover {
    background-color: rgba(219, 112, 167, 0.91);
    color: #050801;
    box-shadow: 0 0 5px rgba(219, 112, 167, 0.91),
    0 0 25px rgba(219, 112, 167, 0.92),
    0 0 50px rgba(219, 112, 167, 0.96),
    0 0 200px rgba(219, 112, 167, 0.91);
}